alright and then that means that the answers are tantheta=4/3 and costheta=3/5 right?

cutiecomittee123

2 years ago

@Irishboy123

cutiecomittee123

2 years ago

but wait since its in quadrant four doesnt that mean that sin would be negative

IrishBoy123

2 years ago

yeah
don't rush in
you know this??
|dw:1443039749879:dw|

cutiecomittee123

2 years ago

no i do not know that

IrishBoy123

2 years ago

|dw:1443039862180:dw|

cutiecomittee123

2 years ago

Alright

cutiecomittee123

2 years ago

so if its in the fourth quadrant does that mean that 4 and 5 are negtive?

IrishBoy123

2 years ago

the hypoteneuse is always +ve
in the 4th, 4 is -ve, 3 is +ve
the CAST thing allows you to predict the sign of the trig function without even looking that far, eg only tan is -ve in the 3rd
of course that is because, in the 3rd, both opposite and adjacent are -ve [and hypoteneouse is always +ve, as mentioned] but the CAST shortcut allows you to "just know"

cutiecomittee123

2 years ago

okay so just -3, 4, and 5 are the sides of the triangle that we use to determine the sin cos tan sec csc and cot?